Area X has been cut off from the rest of the continent for decades. Nature has reclaimed the last vestiges of human civilization. The first expedition returned with reports of a pristine, Edenic landscape; the second expedition ended in mass suicide; the third expedition in a hail of gunfire as its members turned on one another. The members of the eleventh expedition returned as shadows of their former selves, and within weeks, all had died of cancer.

Natalie Portman and Jennifer Jason Leigh star as members of the 12th expedition sent into Area X.

Update: A full trailer is out and it looks pretty heavy on the horror. Or is that just how all trailers for thrillers are cut now?